Orazio lugo



dished stem A fittest (Militia.

ORAZIO LUGO, OF BALTIMORE, MARYLAND.

Letters Patent No. dated February 15, 1870.

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The Schedule refund to in than Letters Patent and sham; put of tho unto.

or in such apparatus as described in Letters Patent No. granted to W. J. Hooper, Theodore Hooper, and myself, by means of sulphurous acid (802,) or with nitrous fumes and, sulpurous acid either alone or in connection withhot air, as set forth in Letters Patent No. 97,939, granted to me December 14, 1869,

tor the-use of hot air either alone or with antiseptics,

for the purpose therein described.

I use the sulphurous acid, or nitrous fumessnd sulphurous acid, to accomplish the same purpose; in con-' neetion with vapors of water at high temperature or with gases derived from the combustion of fuel, or with other gases either under pressure or not, for the purpose.

hereafter more fully specified.

the operation. I

The fish or oflals, scraps, cracklings, blood, or' whatever animal substances it is desired to treat, are placed in a suitable apparatus, as above mentioned. Sulphur! ous acid, or. nitrous fumes and sulphurous acid mixed, or.

in connection with-hot air, is introduced in such apparatus, and made to come in contact with the fish or offals, 856.

The water of said animal matters will be readily eliminated by the hot .gases,while the acid vapors above mentioned will form valuable compounds with the alkaline gases set free by the animal matter, and also arrest decomposition when necessary.

When the animal substance is dry the mass istakcn out of the apparatus and pulverized.

When itis desired to obtain the oil of the fish and the fats of the animal matter the operation is commenced with a low temperature. The temperatureis gradually increased as the operation progresses. The oil of the fish and the fats of the animal matters sep ter contained in the animal matter.

arate with the water contained in said substances and are collected. In thiscase the nitrous fumes may be" dispensed with at the commencement of the opera fit tion. v

The sulphurous acid and nitrous fumes are produced as set forth in chemical treatises, or may be produced in a suitable furnace by burning the necessary quantity of sulphur with the fuel, and at the same time-producing the nitrous fumes by means "of chemical sub-' stances for that purpose.

The gases from the combustion of fuel and the sulphurous and nitrous vapors ay be carried by any known means to the chamber 0 kiln containing any of the above mentioned substanees.-

In this latter instance the hot air is dispensed with, asth'e hot gases from the combustion of fuel answer the same purpose.

Steam or vapors of water is generated by the hot gases or by external application of heat from the wa- The. sulphurous and nitrous vapors are allowed to mix or come in con-' tact with said watery vapors.

Having thus described the several parts of my invention,

WhatI claim, and desire to secure by Letters Patent of the United States, is-

1'. Treating and desiccating fish, oflals, scraps, crackling, blood, and other animal matter, for the, production of guanosor fertilizers and oil and fat'withvs ul-' phurous acid (S02), or with nitrous fumes and sulphurous acid separate ,or-in connection withhot air, steam, or vapors of waterat high temperature, or with gases, from the combustion of fuel, or other suitable gases either under pressure or not, for tbepurpose set forth. 2. The improved fertilizer produced by treatln fish, oflals, scraps, cracklings, blood, and otheraninia matter, with sulphurous acid or with nitrous fumes and sulphurous acid in connection with frot air or other gases or vapors, as herein set forth.

OBAZIO LUGO.

Witnesses:

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